they say the pork producers council calls this study junk science, designed to scare consumers into purchasing only organic pork. is this a good study? what should consumers take away from it? >> "consumer reports" doesn't give us enough information to fully evaluate their study. but there are some concerns here. they raise concerns about antibiotics being used in animals to promote growth. and they say doing that can raise the risk that have the animals can get resistant infections and pass them along to humans. this doesn't add a lot to that information. >> no question that yersinia does cause food poisoning. this is about properly handling and cooking your pork at the end of the day. >> test ease -- it's easy to prevent. cook your pork well. pork should be at 145 degrees. ground pork to 160. use separate cutting boards for raw meat and other foods. and wash your hands when handling raw meat. >> very important, indeed. dr. richard besser, as always, thank you. george, over to you. >> amy, thank you. >>> we're going to turn, now, to a violent home invasion, that has sparked a federal investig